// // NCEndToEndInitialize.swift // Nextcloud // // Created by Marino Faggiana on 03/04/17. // Copyright © 2017 Marino Faggiana. All rights reserved. // // Author Marino Faggiana // // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with this program. If not, see . // import UIKit import NCCommunication @objc protocol NCEndToEndInitializeDelegate { func endToEndInitializeSuccess() } class NCEndToEndInitialize: NSObject { @objc weak var delegate: NCEndToEndInitializeDelegate? let appDelegate = UIApplication.shared.delegate as! AppDelegate var extractedPublicKey: String? override init() { } // -------------------------------------------------------------------------------------------- // MARK: Initialize // -------------------------------------------------------------------------------------------- @objc func initEndToEndEncryption() { // Clear all keys CCUtility.clearAllKeysEnd(toEnd: appDelegate.account) self.getPublicKey() } func getPublicKey() { NCCommunication.shared.getE2EECertificate { account, certificate, errorCode, errorDescription in if errorCode == 0 && account == self.appDelegate.account { CCUtility.setEndToEndCertificate(account, certificate: certificate) self.extractedPublicKey = NCEndToEndEncryption.sharedManager().extractPublicKey(fromCertificate: certificate) // Request PrivateKey chiper to Server self.getPrivateKeyCipher() } else if errorCode != 0 { switch errorCode { case NCGlobal.shared.errorBadRequest: NCContentPresenter.shared.messageNotification("E2E get publicKey", description: "bad request: unpredictable internal error", delay: NCGlobal.shared.dismissAfterSecond, type: NCContentPresenter.messageType.error, errorCode: errorCode, priority: .max) case NCGlobal.shared.errorResourceNotFound: guard let csr = NCEndToEndEncryption.sharedManager().createCSR(self.appDelegate.userId, directory: CCUtility.getDirectoryUserData()) else { NCContentPresenter.shared.messageNotification("E2E Csr", description: "Error to create Csr", delay: NCGlobal.shared.dismissAfterSecond, type: NCContentPresenter.messageType.error, errorCode: errorCode, priority: .max) return } NCCommunication.shared.signE2EECertificate(certificate: csr) { account, certificate, errorCode, errorDescription in if errorCode == 0 && account == self.appDelegate.account { // TEST publicKey let extractedPublicKey = NCEndToEndEncryption.sharedManager().extractPublicKey(fromCertificate: certificate) if extractedPublicKey != NCEndToEndEncryption.sharedManager().generatedPublicKey { NCContentPresenter.shared.messageNotification("E2E sign publicKey", description: "error: the public key is incorrect", delay: NCGlobal.shared.dismissAfterSecond, type: NCContentPresenter.messageType.error, errorCode: errorCode, priority: .max) } else { CCUtility.setEndToEndCertificate(account, certificate: certificate) // Request PrivateKey chiper to Server self.getPrivateKeyCipher() } } else if errorCode != 0 { switch errorCode { case NCGlobal.shared.errorBadRequest: NCContentPresenter.shared.messageNotification("E2E sign publicKey", description: "bad request: unpredictable internal error", delay: NCGlobal.shared.dismissAfterSecond, type: NCContentPresenter.messageType.error, errorCode: errorCode, priority: .max) case NCGlobal.shared.errorConflict: NCContentPresenter.shared.messageNotification("E2E sign publicKey", description: "conflict: a public key for the user already exists", delay: NCGlobal.shared.dismissAfterSecond, type: NCContentPresenter.messageType.error, errorCode: errorCode, priority: .max) default: NCContentPresenter.shared.messageNotification("E2E sign publicKey", description: errorDescription, delay: NCGlobal.shared.dismissAfterSecond, type: NCContentPresenter.messageType.error, errorCode: errorCode, priority: .max) } } } case NCGlobal.shared.errorConflict: NCContentPresenter.shared.messageNotification("E2E get publicKey", description: "forbidden: the user can't access the public keys", delay: NCGlobal.shared.dismissAfterSecond, type: NCContentPresenter.messageType.error, errorCode: errorCode, priority: .max) default: NCContentPresenter.shared.messageNotification("E2E get publicKey", description: errorDescription, delay: NCGlobal.shared.dismissAfterSecond, type: NCContentPresenter.messageType.error, errorCode: errorCode, priority: .max) } } } } func getPrivateKeyCipher() { // Request PrivateKey chiper to Server NCCommunication.shared.getE2EEPrivateKey { account, privateKeyChiper, errorCode, errorDescription in if errorCode == 0 && account == self.appDelegate.account { // request Passphrase var passphraseTextField: UITextField? let alertController = UIAlertController(title: NSLocalizedString("_e2e_passphrase_request_title_", comment: ""), message: NSLocalizedString("_e2e_passphrase_request_message_", comment: ""), preferredStyle: .alert) let ok = UIAlertAction(title: "OK", style: .default, handler: { _ -> Void in let passphrase = passphraseTextField?.text let publicKey = CCUtility.getEndToEndCertificate(self.appDelegate.account) guard let privateKey = (NCEndToEndEncryption.sharedManager().decryptPrivateKey(privateKeyChiper, passphrase: passphrase, publicKey: publicKey)) else { NCContentPresenter.shared.messageNotification("E2E decrypt privateKey", description: "Serious internal error to decrypt Private Key", delay: NCGlobal.shared.dismissAfterSecond, type: NCContentPresenter.messageType.error, errorCode: NCGlobal.shared.errorInternalError, priority: .max) return } // privateKey print(privateKey) // Save to keychain CCUtility.setEndToEndPrivateKey(self.appDelegate.account, privateKey: privateKey) CCUtility.setEndToEndPassphrase(self.appDelegate.account, passphrase: passphrase) // request server publicKey NCCommunication.shared.getE2EEPublicKey { account, publicKey, errorCode, errorDescription in if errorCode == 0 && account == self.appDelegate.account { CCUtility.setEndToEndPublicKey(account, publicKey: publicKey) // Clear Table NCManageDatabase.shared.clearTable(tableDirectory.self, account: account) NCManageDatabase.shared.clearTable(tableE2eEncryption.self, account: account) self.delegate?.endToEndInitializeSuccess() } else if errorCode != 0 { switch errorCode { case NCGlobal.shared.errorBadRequest: NCContentPresenter.shared.messageNotification("E2E Server publicKey", description: "bad request: unpredictable internal error", delay: NCGlobal.shared.dismissAfterSecond, type: NCContentPresenter.messageType.error, errorCode: errorCode, priority: .max) case NCGlobal.shared.errorResourceNotFound: NCContentPresenter.shared.messageNotification("E2E Server publicKey", description: "Server publickey doesn't exists", delay: NCGlobal.shared.dismissAfterSecond, type: NCContentPresenter.messageType.error, errorCode: errorCode, priority: .max) case NCGlobal.shared.errorConflict: NCContentPresenter.shared.messageNotification("E2E Server publicKey", description: "forbidden: the user can't access the Server publickey", delay: NCGlobal.shared.dismissAfterSecond, type: NCContentPresenter.messageType.error, errorCode: errorCode, priority: .max) default: NCContentPresenter.shared.messageNotification("E2E Server publicKey", description: errorDescription, delay: NCGlobal.shared.dismissAfterSecond, type: NCContentPresenter.messageType.error, errorCode: errorCode, priority: .max) } } } }) let cancel = UIAlertAction(title: "Cancel", style: .cancel) { _ -> Void in } alertController.addAction(ok) alertController.addAction(cancel) alertController.addTextField { textField -> Void in passphraseTextField = textField passphraseTextField?.placeholder = NSLocalizedString("_enter_passphrase_", comment: "") } self.appDelegate.window?.rootViewController?.present(alertController, animated: true) } else if errorCode != 0 { switch errorCode { case NCGlobal.shared.errorBadRequest: NCContentPresenter.shared.messageNotification("E2E get privateKey", description: "bad request: unpredictable internal error", delay: NCGlobal.shared.dismissAfterSecond, type: NCContentPresenter.messageType.error, errorCode: errorCode, priority: .max) case NCGlobal.shared.errorResourceNotFound: // message guard let e2ePassphrase = NYMnemonic.generateString(128, language: "english") else { return } let message = "\n" + NSLocalizedString("_e2e_settings_view_passphrase_", comment: "") + "\n\n" + e2ePassphrase let alertController = UIAlertController(title: NSLocalizedString("_e2e_settings_title_", comment: ""), message: NSLocalizedString(message, comment: ""), preferredStyle: .alert) let OKAction = UIAlertAction(title: NSLocalizedString("_ok_", comment: ""), style: .default) { _ in var privateKeyString: NSString? guard let privateKeyChiper = NCEndToEndEncryption.sharedManager().encryptPrivateKey(self.appDelegate.userId, directory: CCUtility.getDirectoryUserData(), passphrase: e2ePassphrase, privateKey: &privateKeyString) else { NCContentPresenter.shared.messageNotification("E2E privateKey", description: "Serious internal error to create PrivateKey chiper", delay: NCGlobal.shared.dismissAfterSecond, type: NCContentPresenter.messageType.error, errorCode: errorCode, priority: .max) return } // privateKeyChiper print(privateKeyChiper) NCCommunication.shared.storeE2EEPrivateKey(privateKey: privateKeyChiper) { account, privateKey, errorCode, errorDescription in if errorCode == 0 && account == self.appDelegate.account { CCUtility.setEndToEndPrivateKey(account, privateKey: privateKeyString! as String) CCUtility.setEndToEndPassphrase(account, passphrase: e2ePassphrase) // request server publicKey NCCommunication.shared.getE2EEPublicKey { account, publicKey, errorCode, errorDescription in if errorCode == 0 && account == self.appDelegate.account { CCUtility.setEndToEndPublicKey(account, publicKey: publicKey) // Clear Table NCManageDatabase.shared.clearTable(tableDirectory.self, account: account) NCManageDatabase.shared.clearTable(tableE2eEncryption.self, account: account) self.delegate?.endToEndInitializeSuccess() } else if errorCode != 0 { switch errorCode { case NCGlobal.shared.errorBadRequest: NCContentPresenter.shared.messageNotification("E2E Server publicKey", description: "bad request: unpredictable internal error", delay: NCGlobal.shared.dismissAfterSecond, type: NCContentPresenter.messageType.error, errorCode: errorCode, priority: .max) case NCGlobal.shared.errorResourceNotFound: NCContentPresenter.shared.messageNotification("E2E Server publicKey", description: "Server publickey doesn't exists", delay: NCGlobal.shared.dismissAfterSecond, type: NCContentPresenter.messageType.error, errorCode: errorCode, priority: .max) case NCGlobal.shared.errorConflict: NCContentPresenter.shared.messageNotification("E2E Server publicKey", description: "forbidden: the user can't access the Server publickey", delay: NCGlobal.shared.dismissAfterSecond, type: NCContentPresenter.messageType.error, errorCode: errorCode, priority: .max) default: NCContentPresenter.shared.messageNotification("E2E Server publicKey", description: errorDescription, delay: NCGlobal.shared.dismissAfterSecond, type: NCContentPresenter.messageType.error, errorCode: errorCode, priority: .max) } } } } else if errorCode != 0 { switch errorCode { case NCGlobal.shared.errorBadRequest: NCContentPresenter.shared.messageNotification("E2E store privateKey", description: "bad request: unpredictable internal error", delay: NCGlobal.shared.dismissAfterSecond, type: NCContentPresenter.messageType.error, errorCode: errorCode, priority: .max) case NCGlobal.shared.errorConflict: NCContentPresenter.shared.messageNotification("E2E store privateKey", description: "conflict: a private key for the user already exists", delay: NCGlobal.shared.dismissAfterSecond, type: NCContentPresenter.messageType.error, errorCode: errorCode, priority: .max) default: NCContentPresenter.shared.messageNotification("E2E store privateKey", description: errorDescription, delay: NCGlobal.shared.dismissAfterSecond, type: NCContentPresenter.messageType.error, errorCode: errorCode, priority: .max) } } } } alertController.addAction(OKAction) self.appDelegate.window?.rootViewController?.present(alertController, animated: true) case NCGlobal.shared.errorConflict: NCContentPresenter.shared.messageNotification("E2E get privateKey", description: "forbidden: the user can't access the private key", delay: NCGlobal.shared.dismissAfterSecond, type: NCContentPresenter.messageType.error, errorCode: errorCode, priority: .max) default: NCContentPresenter.shared.messageNotification("E2E get privateKey", description: errorDescription, delay: NCGlobal.shared.dismissAfterSecond, type: NCContentPresenter.messageType.error, errorCode: errorCode, priority: .max) } } } } }